Node 16 VS Node 22 Performance

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I want to upgrade my project from Node v16.19.1 to Node 22.13.1, before upgrading I did a benchmark to measure performance changes after the upgrade (http server)

But I got a bad result. The performance of Node V22 has a significant decline compared to Node V16 (specifically referring to http scenarios)

Below is the environment and results of my test. I hope you can get your answers. Thank you.

Docker run node v22.13.1 alpine(3.20) on centos7(8cpu 16G)
Docker run node v16.19.1 alpine(3.12) on centos7(8cpu 16G)

Docker run script (The contents in the docker image are basically the same)

docker run --name=node-v22 --rm -it -p 30255:3000 dockerhub.xx/node:22.13.1 /bin/ash
docker run --name=node-v16 --rm -it -p 30256:3000 dockerhub.xx/node:16.19.1 /bin/ash

create app.js content

const http = require('http');

// create HTTP server
const server = http.createServer((req, res) => {
  // set response header
  res.writeHead(200, { 'Content-Type': 'text/plain' });

  // send "Hello World" to client
  res.end('Hello World');
});

// listen 3000 port
server.listen(3000, () => {
  console.log('Server running at http://localhost:3000/');
});

run

node app.js

Throughput testing using abtest.

# n = 1000 or 2000
ab -n 100000 -c n http://localhost:30256/

# n = 1000 or 2000
ab -n 100000 -c n http://localhost:30255/

Test Result

Node V16 2000 concurrent

Server Software:
Server Hostname:        localhost
Server Port:            30256

Document Path:          /
Document Length:        11 bytes

Concurrency Level:      2000
Time taken for tests:   26.451 seconds
Complete requests:      100000
Failed requests:        0
Write errors:           0
Total transferred:      11200000 bytes
HTML transferred:       1100000 bytes
Requests per second:    3780.59 [#/sec] (mean)
Time per request:       529.018 [ms] (mean)
Time per request:       0.265 [ms] (mean, across all concurrent requests)
Transfer rate:          413.50 [Kbytes/sec] received

Node V22 2000 concurrent

Server Software:
Server Hostname:        localhost
Server Port:            30255

Document Path:          /
Document Length:        11 bytes

Concurrency Level:      2000
Time taken for tests:   51.655 seconds
Complete requests:      100000
Failed requests:        0
Write errors:           0
Total transferred:      11200000 bytes
HTML transferred:       1100000 bytes
Requests per second:    1935.93 [#/sec] (mean)
Time per request:       1033.096 [ms] (mean)
Time per request:       0.517 [ms] (mean, across all concurrent requests)
Transfer rate:          211.74 [Kbytes/sec] received

Node V16 1000 concurrent

Server Software:
Server Hostname:       localhost
Server Port:            30256

Document Path:          /
Document Length:        11 bytes

Concurrency Level:      1000
Time taken for tests:   23.729 seconds
Complete requests:      100000
Failed requests:        0
Write errors:           0
Total transferred:      11200000 bytes
HTML transferred:       1100000 bytes
Requests per second:    4214.23 [#/sec] (mean)
Time per request:       237.291 [ms] (mean)
Time per request:       0.237 [ms] (mean, across all concurrent requests)
Transfer rate:          460.93 [Kbytes/sec] received

Node V22 1000 concurrent

Server Software:
Server Hostname:        localhost
Server Port:            30255

Document Path:          /
Document Length:        11 bytes

Concurrency Level:      1000
Time taken for tests:   32.905 seconds
Complete requests:      100000
Failed requests:        0
Write errors:           0
Total transferred:      11200000 bytes
HTML transferred:       1100000 bytes
Requests per second:    3039.03 [#/sec] (mean)
Time per request:       329.052 [ms] (mean)
Time per request:       0.329 [ms] (mean, across all concurrent requests)
Transfer rate:          332.39 [Kbytes/sec] received

I've tested it many times and the results are basically the same.

Can anyone tell me the reason or a more standard test method.

From the perspective of resource consumption, the Node V22 memory usage is smaller, but the CPU has reached a peak of 100% during the test.

Thank for everyone